Solar System
Dynamics
Group
2008 UV99

Asteroid 2008 UV99 was discovered on October 31, 2008 by Catalina Sky Survey. It has a diameter of about 360—800 meters.

Number of original observations: 22
Arc : 2008 10 31 - 2008 11 01
Nominal rms: 0″.41 (44 residuals)

Possible collisions in: 2057, 2064, 2072, 2076, 2081





Year: 2057


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20570323
1.142146820
1.145654105
0.207500553
0.209019472
27.9851759
27.9613014
9.4210005
9.2412210
242.8091532
242.2877150
150.0327634
311.5229716
0″.41
 

Impact date: 2057 03 30.238 (UT)   Vimpact= 19.297 km/sec   Ψimpact = 58°.26  

Vimpact
The velocity of the asteroid relative to the Earth at the moment of impact.
Ψimpact
The impact angle is measured from the vertical axis that goes through the impact point. Thus, the impact angle is 0 degrees for a vertical impact.
rms
Root mean square for the derived impact orbit.

Year: 2064


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20640323
1.141930131
1.139542444
0.207172642
0.206282996
27.9586085
27.9749978
9.4014724
9.1916847
242.7212449
243.3012322
150.2102011
310.6554372
0″.41
 

Impact date: 2064 03 29.980 (UT)   Vimpact= 19.304 km/sec   Ψimpact =52°.70  



Year: 2072


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20720323
1.142078368
1.149504780
0.207657525
0.210644480
27.9910933
27.9382677
9.4252036
9.1903707
242.8058608
241.6357599
150.0202313
312.3612511
0″.41
 

Impact date: 2072 03 30.033 (UT)   Vimpact= 19.706 km/sec   Ψimpact =26°.75  



Year: 2076


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20760323
1.141989701
1.137521712
0.207254633
0.205490672
27.9671388
27.9988034
9.4032183
9.1475380
242.7262486
243.7045155
150.1920455
310.2246848
0″.42
 

Impact date: 2064 03 29.980 (UT)   Vimpact= 19.304 km/sec   Ψimpact =52°.70  



Year: 2081


Orbital elements of impact orbit for two dates (equ. J2000)

Epoch [TT] a [AU] e i [deg] Ω [deg] ω [deg] M [deg] rms
20081130
20810323
1.141918043
1.138561304
0.207457074
0.206098562
27.9731123
27.9955193
9.4137002
9.1407103
242.7520066
243.5400596
150.1292889
310.1926436
0″.41
 

Impact date: 2081 03 30.289 (UT)   Vimpact= 19.660 km/sec   Ψimpact =11°.18  



External links:

2008 UV99 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
2008 UV99 page and Impact Risk page at the NEO Dynamic Site (NEODyS)




Solar System Dynamics & Planetology Group, 2008. All rights reserved